GESTER GT-D01B Ozone Test Chamber is a precision textile testing equipment designed to assess the color fading resistance of fabrics, dyed textiles, and materials under controlled atmospheric ozone exposure. Featuring precise ozone density control (0–500/800 pphm), adjustable temperature (-15°C to 50°C), relative humidity (25%–95% RH), and a 1–20 rpm rotatable specimen holder to ensure uniform gas exposure. Fully compliant with ISO 105-G03, AATCC 109 standard test methods.